﻿using System.Threading;
using DM4;
using sscore;
using System;
using System.Collections.Generic;
using sscore.Utils;
using System.Text.RegularExpressions;
using sscore.Requests;
using System.Net;

namespace OR
{
    public class OR : ModuleBase
    {

        private readonly string _searchUrl;
        private const string StateName = "OR";
        private ResultFile _imagesResultFile;
        readonly string[] _searchParam = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" };

        public OR()
        {
            //initialize main system constants
            ModuleCode = "SO_OR";
            Description = "OR Sex Offenders";
            Version = "1.0";

            //for creating sessions
            StartParam = 0;
            StopParam = _searchParam.Length - 1;

            //initialize help 
            AddToHelp(DM4Consts.StartPosition, String.Format("{0}...{1}", StartParam, StopParam));
            AddToHelp(DM4Consts.EndPositon, String.Format("{0}...{1}", StartParam, StopParam));

            AddToHelp(DM4Consts.IsDownload, "true|false");
            AddToHelp(DM4Consts.IsDownloadImg, "true|false");
            AddToHelp(DM4Consts.InsertToDb, "false|true", "(Expected: servername, dbname)");
            AddToHelp(DM4Consts.ServerName, "");
            AddToHelp(DM4Consts.DbName, "");
            AddToHelp(DM4Consts.IsClearDb, "false|true");
            AddToHelp(DM4Consts.TestParam, "false|true");

            Rpm.Codepage = EncodingType.Windows1251;
            RootUrl = "http://sexoffenders.oregon.gov/"; //root url
            _searchUrl = String.Format("{0}SorPublic/Web.dll/main", RootUrl);
        }

        private void SetParametersDefaults()
        {
            Params.CreateBooleanParam(DM4Consts.IsDownload, true);
            Params.CreateBooleanParam(DM4Consts.IsDownloadImg, true);
            Params.CreateBooleanParam(DM4Consts.InsertToDb, false);
            Params.CreateBooleanParam(DM4Consts.IsClearDb, false);
            Params.CreateStringParam(DM4Consts.DbName, "");
            Params.CreateStringParam(DM4Consts.ServerName, "");
            Params.CreateIntegerParam(DM4Consts.StartPosition, StartParam);
            Params.CreateIntegerParam(DM4Consts.LastPosition, Params.GetIntegerParam(DmConsts.StartPosition));
            Params.CreateIntegerParam(DM4Consts.EndPositon, StopParam);
            Params.CreateIntegerParam(DM4Consts.LastRecord, 0);
        }

        public override OperationResult Init(IDM4Core iCore, DmTaskParams param)
        {
            //use basic initialization sequence
            base.Init(iCore, param);

            SetParametersDefaults();
            return new OperationResult { Result = DM4Consts.Ok };
        }

        public override OperationResult Start()
        {
            DoWork();
            return new OperationResult { Result = DM4Consts.Ok };
        }

        public override OperationResult DoWork()
        {
            OperationResult or = new OperationResult { Result = DM4Consts.ErrorUnknown };

            if (!Ct.IsCancellationRequested)
            {
                WriteLog("Start parameters:", MessageType.Warning);
                foreach (KeyValuePair<string, string> kvp in Params.GetDictionary()) //get all existing parameters
                    WriteLog(String.Format("Key = {0}, Value = {1}", kvp.Key, kvp.Value), MessageType.Warning);

                if (Params.GetBooleanParam(DM4Consts.IsDownload))
                    Load();

                if (Params.GetBooleanParam(DM4Consts.InsertToDb))
                    if ((Params.GetStringParam(DM4Consts.DbName) == "") || (Params.GetStringParam(DM4Consts.ServerName) == ""))
                    {
                        or.Message = String.Format("{0} or {1} is empty", DM4Consts.DbName, DM4Consts.ServerName);
                        ResultCode = DM4Consts.SessionResultCodeError;
                        ResultMessage = or.Message;
                        UpdateStatus(DmConsts.Error);
                        WriteErrorLog(or.Message); //writting to error and session log   

                        return or;
                    }
                    else
                    {
                        //insert offenders to db 
                        UpdateStatus(DM4Consts.SessionInsertToDb);

                        Offenders.OffInsertToDatabase(StateName, Params.GetStringParam(DmConsts.DbName),
                             Params.GetStringParam(DmConsts.ServerName), ResultDir, Params.GetBooleanParam(DmConsts.IsClearDb),
                             WriteLog);

                    }

                //check if need abort task
                if (Ct.IsCancellationRequested)
                {
                    ResultCode = DM4Consts.SessionResultTerminateByUser;
                    ResultMessage = "Session terminated by user";
                    UpdateStatus(DM4Consts.SessionWait);
                    WriteLog("Session aborted by user", MessageType.Cool);
                }
                else
                {
                    UpdateProgress(1);
                    ResultCode = DM4Consts.SessionResultCodeOk;
                    ResultMessage = String.Format("Session complete, errors : {0}, records : {1}", TaskParams.ErrorCount, TaskParams.RecordCount);
                    UpdateStatus(DM4Consts.SessionComplete);
                    WriteLog("------------Finish----------------", MessageType.Cool);
                }
            }
            else
            {
                ResultCode = DM4Consts.SessionResultTerminateByUser;
                ResultMessage = "Session terminated by user";
                UpdateStatus(DM4Consts.SessionWait);
                WriteLog("Session aborted by user", MessageType.Cool);
            }

            return or;
        }

        private void Load()
        {
            string resultFileName = String.Format("{0}\\{1}.{2}", ResultDir, TaskParams.SessionId, DmConsts.ResultFilesExtension);
            bool workFlag = true;

            ResultFile = new ResultFile(resultFileName, OffendersResult.GetHeader());
            _imagesResultFile = new ResultFile(String.Format("{0}\\{1}_images.{2}", ResultDir, TaskParams.SessionId, DM4Consts.ResultFilesExtension), "FileName|FileUrl");
            try
            {
                while (workFlag)
                {
                    //рабочий цикл
                    string error;

                    try
                    {
                        error = "";  //Required!!  /*if (!String.IsNullOrEmpty(error)) --> restart thread; else --> download finished*/

                        WriteLog("Start download...");
                        Searching();
                    }
                    catch (Exception e)
                    {
                        error = e.Message;
                    }

                    if (!String.IsNullOrEmpty(error))
                    {
                        Thread.Sleep(30000);
                        WriteErrorLog(error);
                        WriteLog("Try continue work...", MessageType.Warning);
                    }
                    else
                    {
                        workFlag = false;  //все нормально откачало, заканчиваем работу
                    }
                }
            }
            finally
            {
                ResultFile.Close();
                _imagesResultFile.Close();
            }
        }

        private void Searching()
        {
            if (Test)
            {
                Params.SetIntegerParam(DmConsts.LastPosition, Params.GetIntegerParam(DmConsts.StartPosition));
                Params.SetIntegerParam(DmConsts.EndPositon, Params.GetIntegerParam(DmConsts.StartPosition));
            }
            if (Params.GetIntegerParam(DmConsts.EndPositon) > StopParam)
                Params.SetIntegerParam(DmConsts.EndPositon, StopParam);

            string startPage = PostRequest.RefererReturnCookies(_searchUrl, _searchUrl,
                "I=&cmd=&I_AGREE_TO_CONDITIONS=I+AGREE+TO+THE+CONDITIONS+OF+USE+STATEMENT",
                Rpm);

            for (int indSearchParam = Params.GetIntegerParam(DmConsts.LastPosition); indSearchParam <= Params.GetIntegerParam(DmConsts.EndPositon); indSearchParam++)
            {
                //check if need abort task
                if (Ct.IsCancellationRequested)
                    break;

                Params.SetIntegerParam(DmConsts.LastPosition, indSearchParam);
                UpdateProgress();

                WriteLog(String.Format("Process search param [{0}][{1}].",
                    Params.GetIntegerParam(DmConsts.LastPosition),
                    _searchParam[Params.GetIntegerParam(DmConsts.LastPosition)]));

                string html = PostRequest.UrlOnly(_searchUrl,
                        String.Format("LAST={0}&FIRST=&MIDDLE=&DOB=&BAGE=&EAGE=&BWEIGHT=&EWEIGHT=&BHEIGHT=&EHEIGHT=&SEX=&RACE=&EYE=&HAIR=&STREETNUMBER=&STREETNAME=&CITY=&COUNTY=&ZIP=&S={1}&cmd=QUERY_ENTRY&SEND=Query",
                            _searchParam[Params.GetIntegerParam(DmConsts.LastPosition)],
                           HtmlUtils.GetServerVariableValueById("S", startPage))
                        , Rpm);

                if (RegExpr.IsMatch(html, "(?si:Access Denied)") || !RegExpr.IsMatch(html, "(?si:Search Results)"))
                    throw new Exception("Result page: " + DmConsts.ExcNeedRestart);

                if (html.Contains(">NO Results<"))
                    WriteLog("No results found.");
                else ParseResultPage(html);
            }
        }

        private void ParseResultPage(string html)
        {
            html = HtmlUtils.KillSpace(HtmlUtils.ReplaceSpecSymbols(html.Replace("\r\n", " ").Replace("\t", " ").Replace("\r", " ").Replace("\n", " ")));

            MatchCollection mc = RegExpr.ParseMatchCollection(html, @"(?si:<A HREF=""/SorPublic/Web.dll/main([\S]+)"">View Bulletin)");
            WriteLog(String.Format("found [{0}] matches", mc.Count));
            if (mc.Count == 0)
                throw new Exception(DmConsts.ExcNeedRestart + Environment.NewLine + html);

            List<string> list = new List<string>();

            foreach (Match matchLoc in mc)
                if (!list.Contains(matchLoc.Groups[1].Value))
                    list.Add(matchLoc.Groups[1].Value);

            WriteLog(String.Format("found [{0}] id[s]", list.Count));

            for (int i = Params.GetIntegerParam(DmConsts.LastRecord); i < list.Count; i++)
            {
                //check if need abort task
                if (Ct.IsCancellationRequested)
                    break;

                Params.SetIntegerParam(DmConsts.LastRecord, i);
                string lookupKey = list[i];
                string offenderHtml = GetRequest.UrlOnly(_searchUrl + lookupKey, Rpm);

                WriteLog(String.Format("ParseOffender [{0}][{1}]", Params.GetIntegerParam(DmConsts.LastRecord), lookupKey));
                if (!offenderHtml.Contains("IDENTIFYING INFORMATION"))
                    throw new Exception("Offenders page:" + DmConsts.ExcNeedRestart);

                ParseOffender(offenderHtml, lookupKey);
                UpdateRecordCount(1);
            }

            Params.SetIntegerParam(DmConsts.LastRecord, 0);
        }

        private void ParseOffender(string offenderHtml, string lookupKey)
        {
            offenderHtml = HtmlUtils.KillSpace(HtmlUtils.ReplaceSpecSymbols(offenderHtml.Replace("\r\n", " ").Replace("\t", " ").Replace("\r", " ").Replace("\n", " ")));
            string htmlBackup = offenderHtml;

            using (OffendersResult or = new OffendersResult())
            {
                or.Source_State = StateName;
                or.Source_id = RegExpr.Parse(lookupKey, @"(?si:&I=(\d+))").Trim();
                or.offenderLink = _searchUrl + lookupKey;

                offenderHtml = HtmlUtils.KillSpace(RegExpUtils.DeleteTag(offenderHtml));
                or.fullname = RegExpr.Parse(offenderHtml, @"(?si:Name\s*:\s*</td>\s*<td>(.*?)</td>)").Trim();
                or.Address = RegExpr.Parse(offenderHtml, @"(?si:Address\s*:\s*</td>\s*<td>(.*?)</td>)").Trim();
                or.Birthdate = RegExpr.Parse(offenderHtml, @"(?si:DOB\s*:\s*</td>\s*<td>(.*?)</td>)").Trim();
                or.Age = RegExpr.Parse(offenderHtml, @"(?si:Age\s*:\s*</td>\s*<td>(.*?)</td>)").Trim();
                or.Ethnicity = RegExpr.Parse(offenderHtml, @"(?si:Race\s*:\s*</td>\s*<td>(.*?)</td>)").Trim();
                or.eye_color = RegExpr.Parse(offenderHtml, @"(?si:Eyes\s*:\s*</td>\s*<td>(.*?)</td>)").Trim();
                or.hair_color = RegExpr.Parse(offenderHtml, @"(?si:Hair\s*:\s*</td>\s*<td>(.*?)</td>)").Trim();
                or.height = RegExpr.Parse(offenderHtml, @"(?si:Height\s*:\s*</td>\s*<td>(.*?)</td>)").Trim();
                or.weight = RegExpr.Parse(offenderHtml, @"(?si:Weight\s*:\s*</td>\s*<td>(.*?)</td>)").Trim();
                or.sex = RegExpr.Parse(offenderHtml, @"(?si:Sex\s*:\s*</td>\s*<td>(.*?)</td>)").Trim();

                foreach (Match matchLoc in RegExpr.ParseMatchCollection(RegExpr.Parse(offenderHtml, @"(?si:<td>SMTs:\s*</td>(.*?)</TABLE>)")
                    , "(?si:<td>([^<>]+)</td>)"))
                    if (matchLoc.Groups[1].Value.Trim() != "")
                        or.marks += String.Format("{0};", matchLoc.Groups[1].Value.Trim());

                foreach (Match matchLoc in RegExpr.ParseMatchCollection(RegExpr.Parse(offenderHtml, @"(?si:<td>\s*Conviction Date\s*</td>\s*<td>\s*Offense Name\s*</td>(.*?)</TABLE>)")
                    , "(?si:<tr>(.*?)</tr>)"))
                    if (matchLoc.Groups[1].Value.Trim() != "")
                    {
                        try { or.Crime += String.Format("{0};", RegExpr.ParseMatchCollection(matchLoc.Groups[1].Value, "(?si:<td>(.*?)</td>)")[0].Groups[1].Value.Trim()); }
                        catch { or.Crime += ";"; }
                        try { or.Crime += String.Format("{0}~", RegExpr.ParseMatchCollection(matchLoc.Groups[1].Value, "(?si:<td>(.*?)</td>)")[1].Groups[1].Value.Trim()); }
                        catch { or.Crime += "~"; }
                    }
                if (or.Crime != "") or.Crime = "Date; Offense~" + or.Crime;

                //<p> Vehicle Information: Date of Entry:  09/08/2000 Year:  2000    Make:  SUZI    Model:  SFT    Style:  AU Color:  WHI    Color:      License State:  OR Misc:   </p>
                const string vehExpr = @"(?si:Date of Entry\s*:([^<>:]+)Year\s*:([^<>:]+)Make\s*:([^<>:]+)Model\s*:([^<>:]+)Style\s*:([^<>:]+)Color\s*:([^<>:]+)Color\s*:\s*License State\s*:([^<>:]+)Misc\s*:([^<>:]+)</p>)";
                or.Vehicle += String.Format("{0};", RegExpr.Parse(offenderHtml, vehExpr).Trim());
                or.Vehicle += String.Format("{0};", RegExpr.Parse(offenderHtml, vehExpr, 2).Trim());
                or.Vehicle += String.Format("{0};", RegExpr.Parse(offenderHtml, vehExpr, 3).Trim());
                or.Vehicle += String.Format("{0};", RegExpr.Parse(offenderHtml, vehExpr, 4).Trim());
                or.Vehicle += String.Format("{0};", RegExpr.Parse(offenderHtml, vehExpr, 5).Trim());
                or.Vehicle += String.Format("{0};", RegExpr.Parse(offenderHtml, vehExpr, 6).Trim());
                or.Vehicle += String.Format("{0};", RegExpr.Parse(offenderHtml, vehExpr, 7).Trim());
                or.Vehicle += String.Format("{0}~", RegExpr.Parse(offenderHtml, vehExpr, 8).Trim());
                if (or.Vehicle == ";;;;;;;~") or.Vehicle = "";
                if (or.Vehicle != "") or.Vehicle = "Date of Entry; Year; Make; Model; Style; Color; License State; Misc~" + or.Vehicle;

                string imgName = RegExpr.Parse(htmlBackup, @"(?si:SorPublic/Web.dll/Image\x3FS=([\S]+)\x26PhPk=([\S]+)"")");
                if (Params.GetBooleanParam(DmConsts.IsDownloadImg) && imgName != "")
                {
                    or.Image_ID = Guid.NewGuid() + ".jpg";
                    or.ImageLink = RootUrl + RegExpr.Parse(htmlBackup, @"(?si:(SorPublic/Web.dll/Image\x3FS=[\S]+\x26PhPk=[^""]+))");
                    try
                    {
                        Offenders.DownloadImageWithExceptions(_imagesResultFile,
                            String.Format("{0}\\{1}\\{2}", ResultDir, DmConsts.PhotosDir, or.Image_ID),
                            or.ImageLink, TaskParams.SessionId);
                    }
                    catch (WebException webEx)
                    {
                        if (((HttpWebResponse)webEx.Response).StatusCode == HttpStatusCode.NotFound)
                        {
                            or.Image_ID = "";
                            or.ImageLink = "";
                        }
                        else throw new Exception(DmConsts.ExcInvalidLoadingImage, webEx);
                    }
                }

                ResultFile.Write(or.GetValues());
            }
        }

        private void UpdateProgress()
        {
            if (Params.GetIntegerParam(DmConsts.StartPosition) > Params.GetIntegerParam(DmConsts.EndPositon))
                throw new Exception(String.Format("Invalid parameters {2}[{0}]; {3} [{1}]",
                    Params.GetIntegerParam(DmConsts.StartPosition), Params.GetIntegerParam(DmConsts.EndPositon),
                    DmConsts.StartPosition, DmConsts.EndPositon));
            if (Params.GetIntegerParam(DmConsts.LastPosition) > Params.GetIntegerParam(DmConsts.EndPositon))
                throw new Exception(String.Format("Invalid parameters {2}[{0}]; {3} [{1}]",
                    Params.GetIntegerParam(DmConsts.LastPosition), Params.GetIntegerParam(DmConsts.EndPositon),
                    DmConsts.StartPosition, DmConsts.EndPositon));
            if (Params.GetIntegerParam(DmConsts.StartPosition) > Params.GetIntegerParam(DmConsts.LastPosition))
                throw new Exception(String.Format("Invalid parameters {2}[{0}]; {3} [{1}]",
                    Params.GetIntegerParam(DmConsts.StartPosition), Params.GetIntegerParam(DmConsts.LastPosition),
                    DmConsts.StartPosition, DmConsts.LastPosition));
            UpdateProgress(((double)(Params.GetIntegerParam(DmConsts.LastPosition) - Params.GetIntegerParam(DmConsts.StartPosition))) / (Params.GetIntegerParam(DmConsts.EndPositon) - Params.GetIntegerParam(DmConsts.StartPosition) + 1));
        }
    }
}
